Class 6 Science Chapter 3: Mindful Eating: A Path to a Healthy Body
- 5 topics
- 100 MCQs
- 30 short answers
- 15 long answers
- 75 flashcards
- 25 games
- ~185 min read
- English
What We Eat, and Why It Differs
The traditional food of a state usually follows the crops grown there, along with taste, culture and tradition. Cooking practices have changed too, from the chulha and sil-batta to the gas stove and the electrical grinder.
What you will be able to do
- I can explain why traditional food differs from one state to another.
- I can link the food of a region to the crops grown there.
- I can name the four things that shape what people in a region choose to eat.
- I can describe two changes in cooking practice and give reasons for them.
Key points
A week of your own meals already shows variety, and your friends' lists will differ again.
What a state traditionally eats is built on the crops its own fields raise.
India has diverse soils and climates, so different regions grow different crops.
Food choice also follows taste preferences, culture and traditions, not crops alone.
Punjab grows maize, wheat, chickpea and pulses; Karnataka grows rice, ragi, urad and coconut.
Manipur grows rice, bamboo and soya bean, and eats eromba, utti, singju and kangsoi.
Culinary practices, which is the other name for cooking practices, have changed over time.
The chulha gave way to the gas stove and the sil-batta to the electrical grinder.
Full explanation
A Week of Your Own Meals
Keep a list for seven days of everything you eat. Most children expect the list to be boring and find it is not. Then compare it with a friend's list from the same week. Some items match and some do not, and the differences are the interesting part.
Now Widen the Question
If two children in one classroom eat differently, what happens across a whole country? India has twenty-eight states and eight union territories. The traditional food of each looks quite unlike the next. The question worth asking is not whether it differs, but why.
Start With What Grows
Look at three states side by side. Punjab grows maize, wheat, chickpea and pulses. Karnataka grows rice, ragi, urad and coconut. Manipur grows rice, bamboo and soya bean. Now look at what each eats, and the pattern is hard to miss.
The Food Follows the Crop
Punjab eats chhole bhature and parantha, halwa and kheer, and makki di roti with sarson da saag. Karnataka eats ragi mudde and rice, idli and dosa, rasam and sambhar, palya and coconut chutney. Manipur eats rice with eromba, utti, singju and kangsoi. Each list is built from the crops just above it.
Even the Drinks
The beverages follow too. Punjab drinks lassi and chhach, which is buttermilk, along with milk and tea. Karnataka drinks buttermilk, coffee and tea. Manipur drinks black tea. What grows nearby is what ends up in the glass as well as on the plate.
Why the Crops Differ
That pushes the question one step back. Why does Punjab grow maize and Karnataka ragi? India is an agricultural country with many soil types and many climates. Which crops a region can grow depends on its soil and its weather.
But Crops Are Not the Whole Answer
Three more things shape what a region eats. Taste preferences, which are simply what people there have come to like. Culture. And traditions, which carry a dish from one generation to the next long after the reason for it has been forgotten.
Some Foods Are Everywhere
Compare the state lists carefully and two kinds of item appear. Some turn up almost everywhere, rice being the clearest. Others belong to one place alone. Both kinds are worth noticing, because they answer different questions about a country.
Ask Somebody Older
There is a second question hiding here. Has the food itself stayed the same? Ask an elderly person in your family what they still eat and what is new to them, what has changed about cooking, and what they think caused it. Their answers are evidence you cannot get any other way.
From the Chulha to the Stove
Culinary practices, which is the other name for cooking practices, have changed a great deal. Most cooking was once done on a chulha, a traditional stove. Most of us now cook on a modern gas stove. The food may be the same dish, but the process is not.
From the Sil-batta to the Grinder
The second pair is grinding. Most grinding was once done by hand on a sil-batta, a stone grinder. These days an electrical grinder does the work in a fraction of the time. Anyone who has used both can tell you exactly what changed.
Why Anything Changed at All
Three reasons stand behind those changes. Technological development, which put new tools within reach. Improved transportation, which brought foods from further away. And better communication, which carried ideas about cooking from one place to another.
What Else Went With the Chulha
Think about what a change of tool actually changes. A chulha burns wood or dung and needs somebody to tend it. A gas stove lights at a turn and goes out at a turn. That is a difference in time, in smoke, in who does the work, and in what the kitchen smells like.
The Saying on the Noticeboard
The chapter opens with an old line: annena jatani jivanti, which means food is what gives life to every living being. Another says the healthy person is the one whose food is wholesome, moderate in quantity, and suited to the season, the time and the place. Both are worth holding on to.
What This Chapter Is Really About
So variety in food is not random. It is the record of a place: its soil, its weather, its history and its tools. The next question is what all this food is actually made of, and why the body needs each part of it.
Concepts and terms
The dishes a region has eaten for generations. They usually rest on the crops that grow there, which is why the food of Punjab and of Manipur look so different from each other.
The ways food is cooked and prepared, including the tools used. They differ between regions and they also change over time within one place.
India has many soil types and climates. Which crops a region can grow depends on its soil and its weather, and that in turn shapes what is eaten there.
A drink taken with or between meals. These follow the region too: lassi and chhach in Punjab, buttermilk and coffee in Karnataka, black tea in Manipur.
Watch out!
Myth or fact?
Case Study
Scenario:
A class lists what each child ate the day before. Rice appears on many lists and bajra roti on a few. Their teacher asks why the lists differ when everybody lives in one town. The children ask at home and bring back answers about where their families come from. Then they look at a crop map of India. Rice grows where rain is heavy, and bajra where it is light and the soil is dry. The two foods line up with two kinds of land. Meera says the lists are really a map. The class agrees that what a region eats grew out of what its own fields could raise.
Analysis:
A meal looks like a personal choice and is partly a record of the land. Rice and bajra differ because rainfall does.
Activity:
Ask three families which grain they eat most. Find out where each family comes from and whether the rainfall there is heavy or light.
Try it at home
Title:
The seven-day plate diary
Safety:
This is a writing task only. Do not skip a meal or change what you eat in order to make an interesting list.
What You Notice:
Your own list is more varied than you expected, which is the first surprise. The second is that the items that do not match usually come from somewhere: a grandmother's state, a festival, a crop grown near a family home. The differences have histories.
Did you know
The traditional food of a state usually follows the crops that state grows, which is why maize appears in Punjab and ragi in Karnataka.
Manipur grows bamboo as a food crop, and eromba, utti, singju and kangsoi are eaten there.
Technological development, better transport and better communication are the reasons the book gives for changed cooking practices.
Memory tricks
What decides the food of a region — CTCT - Crops, Taste, Culture, Tradition — Crops come first because they set what is available. The other three shape the choice.
Old tool and new tool — Chulha to stove, sil-batta to grinder — Two pairs, and both changes are about the same three reasons.
Practice MCQs with answers (20)
- A the crops grown in that state
- B the number of people living there
- C the languages spoken there
- D the distance from the sea
Show answer
Why:
Look at what the fields grow and the menu follows.
- A Because farmers prefer different work
- B Because their soils and climates differ
- C Because one region is richer
- D Because the crops cost different amounts
Show answer
Why:
India is an agricultural country with diverse soils and climates.
- A Both true, and the reason explains the assertion
- B Both true, but the reason does not explain it
- C The assertion is true and the reason is false
- D The assertion is false and the reason is true
Show answer
Why:
Both are true, and the reason is why the food of a place follows its fields. Taste and tradition then grow around what will grow.
- A Karnataka
- B Manipur
- C Punjab
- D Kerala
Show answer
Why:
Punjab grows the maize that makki di roti is made from.
- A Punjab
- B Karnataka
- C Manipur
- D Gujarat
Show answer
Why:
Karnataka grows rice, ragi, urad and coconut.
- A Manipur
- B Punjab
- C Karnataka
- D Rajasthan
Show answer
Why:
Manipur grows rice, bamboo and soya bean.
- A Chickpea
- B Coconut
- C Bamboo
- D Wheat
Show answer
Why:
Rice, bamboo and soya bean are the three listed for Manipur.
- A coffee
- B black tea
- C sugarcane juice
- D buttermilk
Show answer
Why:
Karnataka drinks buttermilk too, along with coffee and tea.
- A culinary practices
- B cultural practices
- C agricultural practices
- D nutritional practices
Show answer
Why:
The word covers the tools as well as the method.
- A sil-batta
- B chulha
- C grinder
- D griddle
Show answer
Why:
A chulha is a traditional stove burning wood or dung.
- A storing grain through the year
- B carrying water from a well
- C grinding by hand
- D cooling cooked food
Show answer
Why:
The electrical grinder does the same job today.
- A Better schools, better roads, better hospitals and a great many shops
- B Technological development, improved transport, better communication
- C More people, more crops, more money
- D New states, new languages, new festivals
Show answer
Why:
New tools, faster travel, and ideas moving between places.
- A The two lists are exactly the same
- B Neither list has any food in common
- C Some items match and some differ
- D Only her own list contains rice
Show answer
Why:
Variety appears even between two children in one classroom.
- A That those foods are by far the cheapest ones to grow anywhere
- B That only those foods are healthy
- C That those crops or dishes are widespread across India
- D That the other foods are being forgotten
Show answer
Why:
Rice is the clearest example of a food that turns up almost everywhere.
- A health is the ultimate wealth
- B food is what gives life to every living being
- C eat local, live long
- D never waste any of the food that is on your plate
Show answer
Why:
It was the thought of the day on the school noticeboard.
- A expensive, freshly bought and brought from far away
- B cooked only at home
- C grown within one kilometre
- D wholesome, moderate, and right for the season
Show answer
Why:
Three conditions together, not any one of them alone.
- A Because they cook a great deal better than younger people do
- B Because they eat a wider variety of food
- C Because they know more about farming
- D Because they can describe how food and cooking used to be
Show answer
Why:
Their memory is evidence that cannot be gathered any other way.
- A The crops in the local fields around them
- B The language that is spoken by their neighbours
- C The size of their house
- D The season of the year
Show answer
Why:
The fields change with the place, and the local menu follows them.
- A I and II only
- B II and III only
- C I and III only
- D I, II and III
Show answer
Why:
All three are correct. Each region cooks what its own fields grow, which is why the three menus have so little in common.
- A How far each state is from the capital
- B The wealth of each state in turn
- C The number of festivals that each state holds each year
- D The soil, weather, history and tools of each place
Show answer
Why:
Variety in food is not random; it is the record of a place.
Important short questions (6)
Because those crops are what grow there and are easily available. A region can only build its everyday dishes from what its soil and climate allow it to raise.
The crops cultivated in that region come first. Then the taste preferences of the people there, the culture, and the traditions.
Punjab grows maize and eats makki di roti. Karnataka grows ragi and eats ragi mudde. Either pair is enough.
Culinary practices are the ways food is cooked and prepared, tools included. Grinding once done by hand on a sil-batta is now done on an electrical grinder.
Technological development, which brought new tools. Improved transportation. And better communication between places.
What they still eat and what is new, what changed about cooking, and what caused it. Their memory is the only record of how food used to be in that house.
Long answer questions (3)
Taste is one reason, but it is not the first one. What a region can eat every day is limited by what grows there. India has many soil types and climates, so different regions raise different crops. Punjab grows maize, wheat, chickpea and pulses, and its dishes are built from those. Karnataka grows rice, ragi, urad and coconut, and eats idli, ragi mudde and coconut chutney. Even the drinks follow. On top of the crops sit three more reasons: taste preferences, culture, and traditions handed down. So taste is real, but it works inside what the land already allows.
Two changes stand out. Cooking was mostly done on a chulha, a traditional stove, and is now mostly done on a gas stove. Grinding was mostly done by hand on a sil-batta, a stone grinder, and is now done on an electrical grinder. Three things drove this. Technological development put new tools within reach of ordinary homes. Improved transportation brought both tools and foods from further away. Better communication carried ideas about cooking from one place to another. The dish on the plate may be unchanged, but almost everything about making it is different.
It tells you the country is not one place but many. India is agricultural, with diverse soils and climates, so each region raises its own crops and builds its meals from them. Punjab, Karnataka and Manipur grow three quite different sets of crops and eat three quite different sets of dishes. Culture and tradition then carry those dishes forward through generations. At the same time some items, rice among them, turn up almost everywhere. So the food map shows both how different the regions are and what they share.
Flashcards (15)
Play this topic
- Which state?
- Crop and dish
- Fact or myth?
- From the land to the plate
- Food map sprint
Energy and Building: Carbohydrates, Fats, Proteins
Carbohydrates and fats give the body energy, which is why they are called energy-giving foods. Proteins help the body grow and repair itself, which makes them body-building foods.
What you will be able to do
- I can name the two energy-giving food components and give sources of each.
- I can explain why a runner is given glucose water during a race.
- I can say what proteins do and name plant and animal sources of them.
- I can explain why carbohydrates and fats are grouped apart from proteins.
Key points
Glucose gives instant energy, and glucose is a kind of carbohydrate.
Carbohydrates are among the main sources of energy in the diet, and common sugar is one.
Cereals like wheat, rice and maize, potato and sweet potato, and banana, pineapple and mango carry carbohydrates.
Ghee and oils are fats. Groundnuts, walnuts, coconuts, almonds, pumpkin seeds and sunflower seeds are sources.
Fat is a store of energy, and a polar bear lives on the fat under its skin through a long winter sleep.
Carbohydrates and fats together are called energy-giving foods.
Plant sources of protein include pulses, beans, peas and nuts; animal sources include milk, paneer, egg, fish and meat.
Protein helps growth and repair, so protein-rich foods are called body-building foods.
Full explanation
Skip a Meal and Notice
Everyone has missed a meal at some point. What happens is not subtle. You feel tired and much less energetic, and it comes on within hours. That feeling is the plainest evidence there is that food is doing something inside you, and not just filling a space.
The Runner and the Glucose
Watch a marathon and you will see runners drinking glucose water during the race and again after it. Why glucose and not something else? Because glucose gives energy at once, and at that moment there is no time to wait.
Glucose Belongs to a Family
Glucose is not a thing on its own. It is an example of a carbohydrate, and carbohydrates are among the primary sources of energy in what we eat. Once you know that, a long list of ordinary foods falls into place.
Where the Carbohydrates Are
Cereals carry them: wheat, rice, maize, bajra. So do vegetables such as potato and sweet potato. So do fruits such as banana, pineapple and mango. And so does the common sugar in the kitchen, which is itself a kind of carbohydrate.
Why Laddoos in Winter
Ask why laddoos appear in winter and a grandmother is likely to say they give energy and keep you warm. Look at what goes into one. Besan or wheat flour, which is aata, along with ghee, goond, nuts and seeds. The ghee is the part that matters here.
Ghee and Oils Are Fats
Ghee and the various cooking oils belong to a second food component, called fat. Its sources can be plants or animals. Among the nuts are walnuts and almonds, groundnuts and coconuts and almonds carry it. So do seeds such as pumpkin seeds and sunflower seeds.
Fat Is Energy Kept Back
Carbohydrate is energy you can spend now. Fat is a source of stored energy, held for later. That difference matters more than it sounds, and the clearest illustration of it is an animal that has to live for months without a single meal.
The Polar Bear's Winter
A polar bear builds up a great deal of fat under its skin. That fat is its energy source through a winter sleep, called hibernation, that lasts months. It survives the whole of it without eating. The store is the only thing keeping it alive.
One Name for Both
Carbohydrates and fats both give us energy for doing things, so the two of them share a name: energy-giving foods. Try listing more foods rich in each. Most kitchens turn out to be full of them.
A Different Kind of Job
Not every food component is about energy. Proteins are an important part of what we eat, and they do something else entirely. Pulses carry them, and so do the milk products, which is why both turn up in almost every Indian meal.
From Plants and From Animals
Protein comes from both. Excellent plant sources are pulses, beans, peas and nuts, which on a plate means gram, moong, tuar dal, kidney beans, peas and soya bean. Animal sources are milk, paneer, egg, fish and meat.
Growth and Repair
What protein does is help the body grow and repair itself. That is why protein-rich foods are called body-building foods, and why sportspersons need protein in larger quantities to build their muscles.
Why It Matters for You
Growing children need the right amount of protein for proper growth and development. Not none, and not endless quantities either. The right amount, which is a phrase that comes back later in this chapter and matters more each time.
An Unexpected Source
Mushrooms deserve a mention here. Most kinds come up in places that are dark and damp, and the edible ones carry good protein. Not every protein food is a pulse or a piece of meat.
What Is Still Missing
So three components are accounted for. Carbohydrates and fats for energy, proteins for building. But none of those explains why sailors on long voyages once fell ill, and why a slice of lemon cured them. That is the next topic.
Concepts and terms
A food component that is one of the main sources of energy in the diet. Glucose is one, and so is the common sugar in a kitchen. Cereals, potatoes and many fruits carry it.
A food component that acts as a store of energy. Ghee and cooking oils are fats, and so are the oils inside nuts and seeds. Sources may be plants or animals.
A food component that helps the body grow and repair itself. Pulses, beans, peas and nuts carry it, and so do milk, paneer, egg, fish and meat.
Two groups named by their job. Carbohydrates and fats give energy for activity. Proteins build and mend the body, which is why growing children need the right amount.
Watch out!
Myth or fact?
Case Study
Scenario:
Two pupils plan a day's meals for a school trip. Ravi wants only sweets and biscuits, arguing that sugar gives instant energy. Sana agrees about the energy and asks what else the day needs. Their teacher gives them a simple table of what a plate should carry. The class works out that energy foods are only one row of several. Walking all day uses energy, so carbohydrates matter, but the children are also still growing, and growth needs protein. Ravi changes his plan. He keeps something sweet for the climb and adds dal and curd for the rest. The class sees that a diet answers more than one question at a time.
Analysis:
Ravi was right that glucose is quick energy and wrong that a day needs only energy. Growth and repair need protein whatever the walking demands.
Activity:
Write a day of meals for a long walk. Mark which item supplies energy and which supplies growth, and check that both appear.
Try it at home
Title:
Sort your own kitchen shelf
Safety:
Ask before you open a shelf or a jar. Do not taste anything, do not climb, and stay away from the stove and from anything hot or sharp.
What You Notice:
The carbohydrate column fills fastest in most Indian kitchens, because cereals are the base of the meal. The starred items are the interesting ones. Peanuts belong in two columns, and so does milk, and that is a real finding rather than a mistake.
Did you know
A polar bear builds up fat under its skin and lives on it through a winter sleep that lasts months, without eating.
Edible mushrooms, which come up in dark and damp places, carry good protein.
The common sugar in your kitchen is a kind of carbohydrate, just as glucose is.
Memory tricks
What each component does — Carbs run, fats store, protein builds — Three jobs in three words. Energy now, energy later, and the building work.
Where protein comes from — Pulses and paneer — One plant word and one animal word, to remind you the sources come from both.
Practice MCQs with answers (20)
- A builds muscle quickly
- B provides energy at once
- C keeps the body cool
- D replaces lost protein
Show answer
Why:
There is no time to wait for a slower supply.
- A protein
- B carbohydrate
- C mineral
- D vitamin
Show answer
Why:
Common kitchen sugar is another kind of carbohydrate.
- A Wheat, rice, potato, banana
- B Paneer, egg, fish, meat
- C Walnut, almond, ghee, oil
- D Amla, guava, lemon, orange
Show answer
Why:
Cereals, some vegetables and many fruits carry carbohydrate.
- A a protein
- B a fat
- C a type of carbohydrate
- D not a food component at all
Show answer
Why:
The book asks this directly, right after introducing glucose.
- A Besan
- B Wheat flour
- C Goond
- D Ghee
Show answer
Why:
Ghee and the various oils are grouped under fat.
- A come only from animals
- B come only from plants
- C can come from plants or animals
- D come only from cooked food
Show answer
Why:
Nuts and seeds on one side, butter and curd on the other.
- A Groundnut
- B Sunflower seeds
- C Walnut
- D Tuar dal
Show answer
Why:
Tuar dal belongs with the plant sources of protein.
- A a store of energy
- B a builder of muscle
- C a protector against disease
- D a carrier of water
Show answer
Why:
Carbohydrate is energy now; fat is energy held back.
- A eaten a very large last meal
- B a thick coat of fur only
- C fat accumulated under its skin
- D stored food in a den
Show answer
Why:
That fat serves as its energy source through hibernation.
- A Both true, and the reason explains the assertion
- B Both true, but the reason does not explain it
- C The assertion is true and the reason is false
- D The assertion is false and the reason is true
Show answer
Why:
Both are true, and the reason is what makes the long sleep possible. The store was laid down before the winter began.
- A I and II only
- B II and III only
- C I and III only
- D I, II and III
Show answer
Why:
II and III are correct. I is not: groundnut, sunflower seeds and walnut are all plant sources of fat.
- A instant energy during exercise
- B growth and repair of the body
- C keeping the body warm at night
- D storing energy for later
Show answer
Why:
This is why protein-rich foods are called body-building foods.
- A Gram, moong, tuar dal, kidney beans
- B Milk, paneer, egg, fish
- C Potato, banana, mango, sugarcane
- D Ghee, butter, oil, curd
Show answer
Why:
Peas, nuts and soya bean belong in the same group.
- A Peas, beans, nuts, soya bean
- B Wheat, rice, maize, bajra
- C Milk, paneer, egg, fish
- D Carrot, papaya, mango, amla
Show answer
Why:
Meat is the fifth one the book names.
- A To run for longer without tiring
- B To build their muscles
- C To keep their body temperature up
- D To replace the water they lose
Show answer
Why:
Building is exactly what protein does.
- A no protein at all until adulthood
- B as much protein as possible
- C protein only from animal sources
- D the right amount of protein
Show answer
Why:
Not none, and not endless quantities. The right amount.
- A protein
- B fat
- C sugar
- D water
Show answer
Why:
They come up in places that are dark and damp.
- A Only carbohydrate
- B Carbohydrate and fat only
- C Carbohydrate, fat and protein
- D Fat and protein only
Show answer
Why:
Rice for carbohydrate, ghee for fat, dal for protein.
- A One comes from plants and one from animals
- B One is a nutrient and the other is not
- C One is needed daily and the other only in winter
- D One is energy now and the other is energy stored
Show answer
Why:
The polar bear is the clearest demonstration of the storing half.
- A Nothing, since all food gives energy
- B Fats do not supply energy at all
- C Carbohydrates are needed only by sportspersons
- D Protein is for growth and repair, not energy supply
Show answer
Why:
Two components give energy; the third does the building.
Important short questions (6)
Because glucose provides energy at once. A meal would take time the runner does not have during a race.
Wheat from the cereals, potato from the vegetables, and banana from the fruits. Common sugar would also count.
Carbohydrate supplies energy that can be used at once. Fat is a store of energy, kept for later use.
It accumulates a great deal of fat under its skin before the sleep. That fat is its energy source, so it survives the whole hibernation without eating.
Because protein helps the body grow and repair itself. That building work is what the name refers to.
Pulses and peas from plants, and also beans and nuts. Milk and egg from animals, and also paneer, fish and meat.
Long answer questions (3)
Two of the components in this topic do supply energy, but the third does not. Carbohydrates are among the primary sources of energy, and glucose is the quickest of them. Fats also carry energy, but as a store held for later. Together those two are called energy-giving foods. Proteins do something else. They help the body grow and repair itself, which is why they are called body-building foods, and why sportspersons need more of them to build muscle. A child who ate only energy foods would still not grow properly.
Carbohydrate comes from cereals such as wheat, rice and maize, from vegetables such as potato and sweet potato, and from fruits such as banana, pineapple and mango. Common sugar is one too. Fat comes from ghee and cooking oils, and from nuts such as groundnut, walnut, coconut and almond, and from seeds such as pumpkin and sunflower. Its sources may be plants or animals. Protein comes from pulses, beans, peas and nuts on the plant side, and from milk, paneer, egg, fish and meat on the animal side. Edible mushrooms are a good source as well.
A polar bear builds up fat under its skin during the months when food is available. It then sleeps through a winter that lasts months, eating nothing at all, and the stored fat keeps it alive. That is what makes fat different from carbohydrate. Carbohydrate is energy the body can spend straight away, like the glucose a runner drinks mid-race. It is not designed to sit in the body for months. Fat is, and an animal with no way to find food through a whole winter needs exactly that kind of store.
Flashcards (15)
Play this topic
- Which component?
- Component and job
- Fact or myth?
- Reading a plate
- Components sprint
The Protective Nutrients: Vitamins and Minerals
Vitamins and minerals are needed only in small amounts, but without them the body falls ill. Two investigations, one at sea in 1746 and one in India in the 1960s, are how the connection was found.
What you will be able to do
- I can retell how scurvy and goitre were traced to missing food components.
- I can name the vitamins and minerals in the chapter with a source and a deficiency for each.
- I can define a nutrient and list the five major nutrients.
- I can explain why vitamins and minerals are called protective nutrients.
Key points
During a 1746 voyage, James Lind saw that sailors who ate lemons and oranges recovered from bleeding and swollen gums.
Bleeding and swollen gums are symptoms of scurvy, caused by a lack of Vitamin C.
In the 1960s, swellings low in the throat were widespread across the Himalayan region and the Northern plains.
Such a swelling is goitre, which follows a lack of iodine. Iodised salt visibly reduced it.
Iodised salt is everyday salt with iodine salts blended into it, in the quantity needed.
Vitamins A, B1, C and D and the minerals calcium, iodine and iron protect the body from disease.
Nutrients give energy, support growth, help repair, protect against disease and keep the body working.
Vitamins and minerals are called protective nutrients, needed in small amounts but essential.
Full explanation
Two Puzzles, Two Centuries Apart
Carbohydrates, fats and proteins do not explain everything. Two stories show why. One happened at sea in the seventeen hundreds, and one in India in the nineteen sixties. Both begin with a group of people falling ill for no reason anyone could see.
Case One: The Sailors
Sailors on the long voyages of earlier times often developed gums that bled and swelled. On one such voyage, in 1746, a Scottish physician named James Lind noticed something. Those who ate lemons and oranges recovered. The others did not.
What Lind Had Found
Gums that bleed and swell are the marks of a disease called scurvy. Lemons and oranges are citrus fruits and they carry Vitamin C, and scurvy follows a shortage of it. The cure was not a medicine at all. It was a missing part of the food.
Case Two: The Swollen Necks
In the 1960s, Indian scientists found something among people of the Himalayan region and of the Northern plains: swellings low in the throat were widespread. This time the answer lay not in the food itself but in the ground the food grew in.
Iodine, Missing From the Soil
The soil of that region was short of iodine, so the local food and water were short of it too. A swelling low in the throat is the sign of goitre, and goitre follows a lack of iodine. Nobody there was eating badly. The place itself was short of something.
What Was Done About It
The Government of India set norms, and iodine began to be added to common salt. Iodised salt is nothing exotic: ordinary salt with iodine salts blended in, in the quantity needed. Where people used it, the swelling visibly reduced.
The People Who Farm Salt
Salt itself has a story. The Agariyas are a tribal community of salt farmers. They work the Little Rann of Kutch, and elsewhere in Gujarat too. Eight months of every year they spend out in fierce desert heat, and winning salt from seawater is hard labour.
The Pattern in Both Cases
Look at the two cases together and the shape is the same. A group of people, a set of symptoms, and one food component missing. Put the component back and the symptoms go. That pattern gave a name to a whole class of illness.
Vitamin A and Vitamin B1
Vitamin A keeps eyes and skin healthy, and comes from papaya, carrot, mango and milk. Without it comes loss of vision, starting with poor sight in darkness. Vitamin B1 keeps the heart healthy and supports many bodily functions, and comes from legumes, nuts, whole grains, seeds and milk products. Its lack causes beriberi.
Vitamin C and Vitamin D
Vitamin C helps the body fight diseases and comes from amla, guava, green chilli, orange and lemon. Without it comes scurvy: bleeding gums and slow healing of wounds. Vitamin D helps the body absorb calcium for bones and teeth, and comes from sunlight, milk, butter, fish and eggs. Its lack causes rickets, which means soft and bent bones.
The Three Minerals
Calcium keeps bones and teeth healthy and comes from milk, soya milk, curd, cheese and paneer; without it come weak bones and tooth decay. Iodine supports physical and mental activity and comes from seaweed, singhada and iodised salt; without it comes goitre. Iron is an important part of blood and comes from green leafy vegetables, beetroot and pomegranate; without it comes anaemia.
The Word for All of Them
A food component earns the name nutrient when it gives energy, supports growth, helps repair, guards the body against disease and keeps its functions running. The major ones in food are carbohydrates, proteins, fats, vitamins and minerals. Five in all.
Why Protective
Vitamins and minerals carry a second name too, the protective nutrients, because that is the job they do: guarding the body against disease and keeping it healthy. They are needed only in small amounts. Small is not the same as optional.
What Cooking Takes Away
Notice what happens to vegetables when they are cooked. They lose their bright colour and turn softer and less crisp. Some nutrients, Vitamin C among them, are lost to the high heat. That is a good argument for including fruits and uncooked vegetables in a diet.
And a Warning About Washing
Washing cut or peeled vegetables and fruits also loses some vitamins into the water. That is not a reason to skip washing. All fruits and vegetables should be washed thoroughly before they are eaten. Wash them whole, before cutting, and you lose less.
Concepts and terms
A food component that provides energy, supports growth, helps repair, protects the body from disease and keeps its functions running. The five major ones are carbohydrates, proteins, fats, vitamins and minerals.
Vitamins and minerals together. They guard the body against disease and keep it healthy. Only small amounts are needed, but those amounts are not optional.
An illness caused by a food component being missing or too scarce in the diet. Scurvy, beriberi, rickets, goitre and anaemia are the examples in this chapter.
Everyday kitchen salt with iodine salts blended in, in the quantity needed. It was introduced to answer the iodine shortage in the soil of some Indian regions.
Watch out!
Myth or fact?
Case Study
Scenario:
A class reads that sailors on a 1746 voyage recovered when they were given lemons and oranges. Imran says the sailors must have been hungry. Nita points out that they had food and still fell ill, so hunger is not the explanation. Their teacher asks what lemons carry that ship's rations did not. The answer is Vitamin C, and the illness was scurvy. The class then looks at how long such a voyage lasted and what kept well at sea. Salted meat and dry biscuit last for months; fresh fruit does not. The children see that the illness followed from the storage problem rather than from any shortage of food.
Analysis:
Enough food and the right food are different things. The voyage had quantity and lacked one protective nutrient, and that is what the lemons supplied.
Activity:
Find out which foods in your kitchen keep for months and which spoil in days. Write one sentence on what a long journey would lose.
Try it at home
Title:
Read the label, find the mineral
Safety:
Handle packets only, not open containers. Do not taste anything, and put every packet back where you found it.
What You Notice:
Most salt packets say something about iodine, and most people have never read it. The amount is printed in very small type, which is itself worth noticing. The answer to the last question often reaches back to exactly the years the chapter describes.
Did you know
James Lind was a Scottish physician, and the voyage on which he made his observation was in 1746.
The Agariyas are a tribal community who win salt from seawater in the Little Rann of Kutch, and elsewhere in Gujarat.
For eight months a year the Agariyas work out in fierce desert heat to win that salt.
Memory tricks
The four vitamins in the chart — A eyes, B1 heart, C fights, D bones — One word each for what they look after. The deficiency diseases follow from it.
The three minerals — Calcium bones, Iodine neck, Iron blood — Bone and tooth decay, goitre, and anaemia are the three things that go wrong.
Practice MCQs with answers (20)
- A 1746
- B 1846
- C 1946
- D 1960
Show answer
Why:
The 1960s belong to the second case, about iodine in India.
- A goitre
- B scurvy
- C rickets
- D anaemia
Show answer
Why:
Lemons and oranges cured it, because they carry Vitamin C.
- A iodine
- B iron
- C vitamin C
- D calcium
Show answer
Why:
Amla, guava and green chilli are other sources of it.
- A beriberi
- B rickets
- C anaemia
- D goitre
Show answer
Why:
It was widespread across the Himalayan region and the Northern plains.
- A Both true, and the reason explains the assertion
- B Both true, but the reason does not explain it
- C The assertion is true and the reason is false
- D The assertion is false and the reason is true
Show answer
Why:
Both are true, and the reason runs from the ground up. Food grown in iodine-poor soil cannot carry what the soil does not have.
- A salt with the sand washed out of it
- B common salt mixed with salts of iodine
- C salt boiled to make it purer
- D salt taken from a mine rather than the sea
Show answer
Why:
Adding the missing thing back was the whole idea.
- A the Himalayan region
- B the Nilgiri hills
- C the Little Rann of Kutch
- D the Northern plains
Show answer
Why:
They spend eight months of the year in extreme desert heat.
- A Vitamin B1
- B Vitamin C
- C Vitamin D
- D Vitamin A
Show answer
Why:
Poor vision in darkness is the first sign of its lack.
- A I and II only
- B II and III only
- C I and III only
- D I, II and III
Show answer
Why:
I and III are correct. II is not: iodised salt is common salt MIXED with salts of iodine, which is a different thing from purifying it.
- A Vitamin C
- B Vitamin D
- C Vitamin A
- D Vitamin B1
Show answer
Why:
That is why its lack shows up as soft and bent bones.
- A goitre
- B beriberi
- C rickets
- D scurvy
Show answer
Why:
Sunlight, milk, butter, fish and eggs are the sources to remember.
- A Beetroot, pomegranate, spinach
- B Seaweed, singhada, iodised salt
- C Papaya, carrot, mango
- D Milk, curd, cheese, paneer
Show answer
Why:
The other three sets belong to Vitamin A, iron and iodine.
- A iron
- B Vitamin A
- C iodine
- D calcium
Show answer
Why:
Iron is an important component of blood.
- A Proteins
- B Water
- C Minerals
- D Carbohydrates
Show answer
Why:
Water is essential, but the five majors are carbohydrates, proteins, fats, vitamins and minerals.
- A are found only in protected crops
- B are needed in very large amounts
- C guard the body against diseases
- D protect food from spoiling
Show answer
Why:
Small amounts are enough, but they are not optional.
- A Vitamins are only needed by growing children
- B Nothing, since small amounts cannot matter
- C Vitamins are actually needed in very large amounts
- D Small amounts are still essential to stay healthy
Show answer
Why:
Small is not the same as optional, as scurvy shows.
- A Some nutrients, including Vitamin C
- B All of their protein and all their fat
- C Their roughage
- D Their weight only
Show answer
Why:
High heat is the reason, which argues for some raw produce in the diet.
- A only if they look dirty
- B whole, before cutting them
- C after cutting them into pieces
- D not at all, to save the vitamins
Show answer
Why:
Washing cut or peeled produce loses vitamins, but washing must still be done.
- A Both followed one food component being missing
- B Both were cured by medicines newly invented
- C Both were caused by eating spoiled food
- D Both happened only to people living near the sea
Show answer
Why:
A group of people, a set of symptoms, one component missing.
- A calcium
- B iron
- C Vitamin D
- D iodine
Show answer
Why:
Water chestnut is singhada, and the mineral supports physical and mental activity.
Important short questions (6)
That sailors who ate lemons and oranges recovered from gums that bled and swelled. Those symptoms are scurvy, and the fruit was supplying the Vitamin C they lacked.
Because the soil there held little iodine. The local food and water therefore carried little of it, whatever the people ate.
Vitamin A, loss of vision. Vitamin B1, beriberi. Vitamin C, scurvy. Vitamin D, rickets.
Calcium keeps bones and teeth healthy. Iodine supports physical and mental activity. Iron is an important component of blood.
A nutrient is a food component that gives energy, supports growth, helps repair, protects the body from disease and keeps its functions running. The five are carbohydrates, proteins, fats, vitamins and minerals.
Because washing cut or peeled vegetables loses some vitamins into the water. Washing must still be done thoroughly, so doing it before cutting loses less.
Long answer questions (3)
In the first, sailors on long voyages had gums that bled and swelled. On a voyage in 1746 the Scottish physician James Lind noticed that those who ate lemons and oranges recovered. The disease is scurvy and the missing thing is Vitamin C. In the second, Indian scientists in the 1960s found swellings low in the throat widespread across the Himalayan region and the Northern plains. That is goitre, and the cause was too little iodine in the soil, and so in the food and water. Both cases follow one shape: a group of people, a set of symptoms, and one component missing from the diet.
A nutrient is a food component that provides energy, supports growth, helps repair, protects the body from disease and maintains its various functions. The major nutrients are carbohydrates, proteins, fats, vitamins and minerals. Of these, carbohydrates and fats supply energy and proteins build and repair. Vitamins and minerals do neither of those things. What they do is guard the body against disease and keep it healthy, so they are called protective nutrients. They are needed in small amounts, but scurvy and goitre show what happens when those small amounts go missing.
Two habits are costing her nutrients. Long cooking at high heat destroys some of them, Vitamin C among them, which is also why the vegetables lose their bright colour and go soft. Washing after chopping lets vitamins leave through the cut surfaces into the water. I would suggest washing the vegetables whole and thoroughly before cutting them, cooking them less, and including some fruits and uncooked vegetables in the meal. Washing itself should not be skipped, because everything must be clean before it is eaten.
Flashcards (15)
Play this topic
- Vitamin or mineral?
- Missing thing and disease
- Fact or myth?
- How a deficiency gets traced
- Protective sprint
Roughage, Water, and Three Tests
Roughage carries no nutrients yet the body needs it, and so does water. Three simple tests find starch, fat and protein in ordinary food, and one Indian scientist measured over 500 foods to find out what the country was missing.
What you will be able to do
- I can say what roughage does and name good sources of it.
- I can explain the two jobs water does in the body.
- I can describe the tests for starch, fat and protein and the result each gives.
- I can say who Coluthur Gopalan was and what followed from his surveys.
Key points
Dietary fibres, also called roughage, give no nutrients but are an essential part of food.
Roughage helps the body get rid of undigested food and lets stools pass smoothly.
Plant products supply roughage: wholegrains and pulses, nuts, fresh fruit, and the green leafy vegetables.
Water helps the body absorb nutrients from food and removes waste through sweat and urine.
Not every nutrient comes from plants or animals: salt comes from seawater or rocks.
A blue-black colour after two or three drops of iodine solution shows starch.
An oily patch left on paper, faintly letting light through, shows fat.
A violet colour after copper sulfate and caustic soda solutions shows protein.
Full explanation
Something That Feeds You Nothing
Here is an odd item. Dietary fibres, also called roughage, provide no nutrients to the body at all. Nothing. And yet they are described as an essential component of our food. A thing that feeds you nothing and is still necessary needs explaining.
What Roughage Actually Does
Its job is clearing up. Roughage helps the body be rid of undigested food, and keeps stools passing smoothly. Anybody with an elderly relative told by a doctor to eat more fibre has already met this advice from the other end.
Where to Find It
It comes mainly from plant products. Wholegrains and pulses supply it, so do nuts, so does fresh fruit, and so do the green leafy vegetables. Notice that the list is almost entirely things people are told to eat more of for other reasons too.
Water Is Part of the Diet
Water counts as an essential part of what we eat, not merely something to drink alongside it. It does two jobs. It helps the body absorb nutrients out of food, and it carries waste away in sweat and in urine. Both matter every day.
Not Everything Comes From a Field
There is a neat question hiding here: do we get all nutrients from plants and animals? No. Salt can come from seawater or from rocks. And Vitamin D can be made by the body itself, simply on being exposed to sunlight.
Eat Local Where You Can
The chapter adds an argument that reaches past the body. Food grown nearby, and coming from plants where that is possible, is healthy for you and also good for the environment and the planet. That is two reasons for one habit.
The Man Who Measured Indian Food
Coluthur Gopalan, who lived from 1918 to 2019, began nutrition research in India. He measured the nutritional value of more than five hundred Indian foods, and set out what a suitable diet looks like in an Indian context, rather than borrowing one.
What His Surveys Found
He led surveys of the nutritional status of the Indian population. They found widespread deficiencies in protein, in energy, and in other food components. That is not an opinion about food. It is a measurement, across a country, and it had consequences.
From a Survey to a School Meal
The work led to the Mid Day Meal Programme. From 2002 it has run as the PM POSHAN initiative. It provides balanced food in government-run and government-aided schools. Millions of children across the country have eaten better because of it.
Can You Test Food Yourself?
Some of this can be checked by hand. Starch, which is a type of carbohydrate, along with fat and protein, can be detected with fairly simple tests. Other components can only be found in a well-equipped laboratory, so three is what we get.
Test One: Iodine for Starch
Take small pieces of several foods, each on its own dish. Potato and cucumber. Bread, and rice and gram both boiled. Peanuts and coconut, both crushed. A little oil and butter. Put two or three drops of diluted iodine solution on each with a dropper. Watch the colour. Blue-black means starch is there.
Test Two: Paper for Fat
Take the same food items again. Put each on its own piece of paper, wrap the paper around it and press, being careful not to tear it. If the item holds a little water, let the paper dry first. Then look for an oily patch.
Holding the Paper to the Light
The patch is the answer, and there is a way to be sure of it. Hold the paper up against the light. Can you see light shining faintly through the patch? That is fat. Oil and butter leave it plainly, and so, less obviously, do peanuts and coconut.
Test Three: Violet for Protein
This one your teacher may demonstrate. Grind each food to a paste or powder with a pestle and mortar. Put about half a teaspoon into a clean test tube. Add two or three teaspoons of water and shake well. Now two drops of copper sulfate solution, and after them ten drops of caustic soda solution. Shake, and leave it undisturbed for a few minutes.
What You See, and What You Must Not Do
A violet colour in the tube means protein. Now the precautions, which are not optional. These chemicals are harmful. Do not touch any of them unless you are told to. If any spills on you, wash the place with water at once. Never put them in your mouth, and never try to smell them.
Peanuts Answer Twice
Fill in the table and one result stands out. Peanuts show the presence of both protein and fat. So a food is not one nutrient wearing a label. Any food we eat may contain several at once, which is exactly what the next topic is built on.
Concepts and terms
Also called dietary fibre. It supplies no nutrients at all, yet it is essential, because it helps the body clear undigested food and keeps stools passing smoothly. Plant products supply it.
Water helps the body absorb nutrients out of food, and it carries waste away through sweat and urine. Both jobs make it an essential part of the diet, not merely a drink.
A simple check for one component in a food sample. Starch, fat and protein can each be found this way; other components need a well-equipped laboratory.
A study of what a population actually eats and what it lacks. Coluthur Gopalan led such surveys in India and found widespread shortages of protein, energy and other components.
Watch out!
Myth or fact?
Case Study
Scenario:
A class tests three foods for starch, fat and protein. Rohit reports that his bread sample shows no starch. The others get a clear result from the same loaf. Their teacher asks the class to compare how each test was done. Rohit used two drops of iodine on a damp piece. The rest dried their samples first and used one drop. The class repeats the test with the drying step added and Rohit's sample now shows starch plainly. Sana writes down what went wrong. The food was not different, the method was, and a test only means something when every sample is treated the same way.
Analysis:
One odd result among three usually points at the method rather than the food. Repeating with the step restored turned the odd result into agreement.
Activity:
Test two foods for starch twice, once damp and once dried. Write down both results and say which step mattered.
Try it at home
Title:
The paper test, done properly
Safety:
Only the fat test, which uses no chemicals. Do not attempt the protein test at home: copper sulfate and caustic soda are harmful and belong in a school laboratory.
What You Notice:
Butter and peanut leave a patch you can see through. Cucumber leaves a damp mark that vanishes as it dries, which is exactly why the chapter tells you to wait. The potato is the interesting one, because it holds starch and almost no fat, so the paper stays clear.
Did you know
Coluthur Gopalan, who lived from 1918 to 2019, measured the nutritional value of over 500 Indian foods.
His surveys led to the Mid Day Meal Programme of 2002, now run as the PM POSHAN initiative.
Peanuts turn up positive in two of the three tests, showing both protein and fat.
Memory tricks
The three tests — Iodine blue-black, paper oily, violet protein — Each test named by what you see. Colour, patch, colour again.
What roughage and water do — Neither feeds you, both are essential — Roughage carries no nutrients and water is not one, yet the body needs both.
Practice MCQs with answers (20)
- A dietary fibre
- B stored energy
- C a protective nutrient
- D a mineral
Show answer
Why:
Both names are used for the same thing in the chapter.
- A None of it at all
- B All of the body energy
- C Most of its protein
- D A small amount of vitamins
Show answer
Why:
None. Roughage is not absorbed, and it is still needed: it helps clear undigested food out of the body.
- A supply energy between meals
- B help clear undigested food from the body
- C build and repair the muscles
- D protect the body from a great many diseases
Show answer
Why:
It also keeps stools passing smoothly.
- A Green leafy vegetables
- B Wholegrains
- C Butter
- D Fresh fruits
Show answer
Why:
Roughage comes mainly from suitable plant products.
- A supplies energy for activity
- B builds and repairs the body
- C helps absorb nutrients and removes waste
- D protects the body against many infections
Show answer
Why:
Waste leaves through sweat and urine.
- A Protein
- B Fat
- C Carbohydrate
- D Salt
Show answer
Why:
It is won either from seawater or out of rocks.
- A Vitamin A
- B Vitamin B1
- C Vitamin C
- D Vitamin D
Show answer
Why:
It does so on being exposed to sunlight.
- A More than five hundred
- B About fifty
- C About five thousand
- D Exactly one hundred
Show answer
Why:
He lived from 1918 to 2019.
- A That Indians ate more than they needed
- B That widespread deficiencies existed in protein and energy
- C That only children were affected
- D That the Indian diet needed no sort of change at all anywhere
Show answer
Why:
A measurement across a population, not an opinion.
- A 1960
- B 1984
- C 2002
- D 2015
Show answer
Why:
It runs now as the PM POSHAN initiative.
- A Vitamin A, calcium and iron
- B Starch, fat and protein
- C Water, roughage and salt
- D Vitamin C, iodine and fat
Show answer
Why:
The others need a well-equipped laboratory.
- A One
- B Two or three
- C Ten
- D Half a teaspoon
Show answer
Why:
Then watch for a change in the colour of the food.
- A fat is present
- B protein is present
- C starch is present
- D nothing is present
Show answer
Why:
Starch is a type of carbohydrate.
- A I and II only
- B II and III only
- C I and III only
- D I, II and III
Show answer
Why:
All three are correct. Roughage feeds nothing and is still needed, because it helps clear undigested food out of the body.
- A Both true, and the reason explains the assertion
- B Both true, but the reason does not explain it
- C The assertion is true and the reason is false
- D The assertion is false and the reason is true
Show answer
Why:
Both are true, and the reason is the trap the step avoids. A wet patch and a greasy patch look much the same.
- A Iodine solution and water
- B Copper sulfate and caustic soda solutions
- C Vinegar and lemon juice
- D A salt solution and a sugar solution together
Show answer
Why:
Two drops of the first, then ten drops of the second.
- A starch
- B fat
- C protein
- D roughage
Show answer
Why:
Leave the tube undisturbed for a few minutes first.
- A wash the area with water at once
- B wipe it on your clothes
- C leave it and see whether it stings
- D smell it to identify what it was
Show answer
Why:
These chemicals are harmful and must be handled with care.
- A Starch and fat
- B Starch and protein
- C Protein and roughage
- D Fat and protein
Show answer
Why:
One food may contain several nutrients at once.
- A Peanuts are the healthiest food that a person can eat
- B Most foods carry no nutrients worth the name at all
- C The three food tests cannot be relied upon together
- D A single food may carry more than one nutrient at once
Show answer
Why:
A food is not one nutrient. The tests are read together, which is why a single item can come out positive in two of them.
Important short questions (6)
Because it helps the body get rid of undigested food and keeps stools passing smoothly. That work is necessary even though no nourishment comes from it.
Water helps the body absorb nutrients out of food, and it carries waste away. That waste leaves in sweat, and also in urine.
Put a small piece of the food on a dish and add two or three drops of diluted iodine solution with a dropper. A blue-black colour shows that starch is present.
Wrap it in paper and press without tearing, letting the paper dry if it is damp. An oily patch shows fat, and holding the paper to the light shows light shining faintly through it.
Do not touch the chemicals unless told to. Wash any spill off your skin at once with water. Never put them in your mouth or try to smell them.
They found shortages of protein, of energy and of other components, right across the Indian population. That led to the Mid Day Meal Programme, running since 2002 as PM POSHAN.
Long answer questions (3)
The first is roughage, also called dietary fibre. It provides no nutrients at all, yet the body needs it to clear undigested food and to keep stools passing smoothly. Wholegrains, pulses, nuts, fresh fruit and the green leafy vegetables supply it. The second is water. It nourishes nothing by itself, but it helps the body absorb nutrients out of food, and it carries waste away in sweat and urine. Both show that being essential and being nourishing are two different things.
I would cut three small pieces. For starch I would put one on a dish and add two or three drops of diluted iodine solution. A blue-black colour means starch. For fat I would wrap the second piece in paper and press it without tearing. If the food were damp I would let the paper dry first. Then I would hold it to the light and look for a patch that lets light through. For protein I would grind the third piece with a pestle and mortar. Half a teaspoon goes into a test tube with water. Then two drops of copper sulfate and ten of caustic soda. Violet means protein.
Coluthur Gopalan began nutrition research in India. He measured the nutritional value of more than five hundred Indian foods. He set out a diet suited to an Indian context, rather than one borrowed from elsewhere. Next he led surveys of how well the population was actually fed. Those surveys found shortages of protein, of energy and of other components. Because that was measured rather than argued, it could be acted on. It led to the Mid Day Meal Programme, running since 2002 as PM POSHAN. That scheme provides balanced food in government-run and government-aided schools.
Flashcards (15)
Play this topic
- Which test finds it?
- Step and result
- Fact or myth?
- The protein test, in order
- Test bench sprint
A Balanced Diet, and How Far Food Travels
A balanced diet carries every nutrient, plus roughage and water, each in the amount needed for person eating it. Junk food fails that test, millets pass it easily, and food miles ask a different question about the same plate.
What you will be able to do
- I can define a balanced diet and say what makes one person's differ from another's.
- I can read a nutrition label and compare two foods from it.
- I can explain what makes a food junk food and why frequent eating of it is harmful.
- I can say what millets are, why they are called nutri-cereals, and what food miles means.
Key points
A balanced diet carries every nutrient the body needs, with roughage and water, in amounts that suit the eater.
Requirements vary with age, gender, physical activity, health status and lifestyle.
Junk foods are high in calories from sugar and fat and very low in protein, minerals, vitamins and fibre.
Potato wafers, candy bars and carbonated drinks are the examples the chapter gives.
Eating junk food often can make a person obese and bring several health problems.
Jowar, bajra, ragi and sanwa are millets, native crops of India, also called nutri-cereals.
Millets carry vitamins, minerals such as iron and calcium, and dietary fibres.
Food miles counts how far a food has travelled in all, from producer to eater.
Full explanation
Does Everyone Need the Same Food?
Ask whether you and your grandparents need the same nutrients, in the same amounts, and the answer is plainly no. Requirements vary with age, with gender, with how much physical activity a person does, with health, and with the way somebody lives.
The Definition to Hold On To
The definition runs like this. A diet counts as balanced when it carries every essential nutrient, plus roughage and water, in amounts right for the body to grow and develop. Read that again and notice the words in the right amount. That is the part doing the real work.
Check Your Own Week
Go back to the list of everything you ate over a week. Does it carry all the nutrients and the other essential components? If not, which are missing? That is a question you can answer yourself, and it is more useful than any general advice about eating well.
Two Packets, Side by Side
Here is a real comparison. Take a packet of potato wafers, and beside it a packet of roasted chana. Both carry nutritional information for 100 grams. Read both before choosing, and the choice starts to look different.
What the Numbers Say
Take 100 grams of each. The wafers give 536 kilocalories. Their fat is 35.0 g, carbohydrate 53.0 g, protein 7.0 g, dietary fibre 4.8 g. The roasted chana gives 355 kilocalories. Its fat is 6.26 g, carbohydrate 58.58 g, protein 18.64 g, fibre 16.8 g.
Reading Those Two Columns
The chana has more than twice the protein and more than three times the fibre, on far less fat and fewer calories. The wafers win on nothing except energy density, and energy is the one thing most of us are not short of.
The Name for the Losing Column
Some foods carry a great many calories, because sugar and fat run high in them, while protein, minerals, vitamins and dietary fibre all run very low. Those are called junk foods. Potato wafers, candy bars and carbonated drinks are the examples in the chapter.
Why Frequent Is the Problem
Nobody says one packet ruins a person. What the chapter says is that eating such foods frequently is not good for the body. It can make a person obese, and someone who becomes obese may suffer from several health problems.
Health Is the Ultimate Wealth
Dr Poshita, the nutritional expert at the food festival, keeps repeating a line: health is the ultimate wealth. Keeping to a balanced diet, and staying off junk food, are the two habits that build towards a healthy body, and good health is what a happy life rests on.
Four Grains Coming Back
You have probably heard of jowar, bajra, ragi and sanwa, which is the barnyard millet. These are native crops of India and they can be cultivated easily in many different climates. Together they are called millets.
Why Millets Are Called Nutri-cereals
Millets are small grains that India has eaten for centuries. They are popular again now, for what they do for health. They carry vitamins in quantity, along with minerals such as iron and calcium, and of dietary fibres, which is why they carry the second name nutri-cereals.
What a Packet Must Tell You
Packaged food must carry information about its nutrients on the cover, listing the amount of each one. Sometimes a maker puts extra nutrients into a food while processing it, to raise its nutritional quality. That is called fortification, and iodised salt is one result of it. Certain baby foods are another.
Who Checks the Packets
India's Food Safety and Standard Authority, known as FSSAI, is the government body charged with regulating food quality here. So the label on a packet is not merely a claim by whoever sold it to you.
The Story of a Chapati
How does food get from a farm to a plate? A farmer grows the wheat. The grain is threshed and winnowed, then stored. It is ground and packed, then transported to a retail shop. Only then does it reach the plate. Count the people involved and the time taken.
Food Miles
Add up the whole journey a bag of wheat makes, or any other food, from the person who produced it to the person who eats it. That total is called its food miles. Shortening it cuts the cost and the pollution of transport, supports local farmers, and keeps food fresher.
And Do Not Waste It
Many people leave food unconsumed on their plates. Think of the time and effort that farmers and others put into moving it from the farm to that plate. Take only as much as you can eat. Eat healthy, share, and respect food.
Concepts and terms
A diet carrying every essential nutrient, plus roughage and water, in amounts right for the body to grow and develop properly. That amount is not the same for everybody.
Food that is high in calories because of high sugar and fat, while carrying very little protein, minerals, vitamins or dietary fibre. Eating it often is not good for the body.
Small-sized grains native to India, such as jowar, bajra, ragi and sanwa. They grow in many climates and carry vitamins, minerals and fibre, which is why they are called nutri-cereals.
How far a food has travelled in total, counted from the producer all the way to the person eating it. Keeping it short cuts cost and pollution and helps local farmers.
Case study: what the school canteen should stock
Scenario:
The canteen at a school in Dharwad has money for one new snack. Two are offered at the same price. The first is potato wafers. Per 100 grams the packet declares 536 kilocalories, 35.0 g of fat, 53.0 g of carbohydrate, 7.0 g of protein and 4.8 g of dietary fibre. The second is roasted chana. Its packet declares 355 kilocalories, 6.26 g of fat, 58.58 g of carbohydrate, 18.64 g of protein and 16.8 g of fibre. The wafers are made four hundred kilometres away. The chana is roasted by a family in the next town. Several students say the wafers will sell better. The Class 6 group has been asked to advise the canteen committee before it decides.
Analysis:
Two separate questions are tangled together here. One is what the food does to the body, which the labels answer. The other is how far it travelled, which they do not. Both point the same way this time, but they are not the same question.
Activity:
Collect five empty food packets from home, with permission. Copy the per-100-gram figures for energy, fat, protein and fibre into a table. Rank the five by protein and then by fat, and see whether the two rankings agree. Then find out, from the packet or from an adult, roughly where each one was made.
Watch out!
Myth or fact?
Try it at home
Title:
Three packets, one table
Safety:
Use empty packets only. Do not open any sealed packet to read its label, and wash your hands after handling used packaging.
What You Notice:
The columns rarely agree. A packet that wins on energy usually loses on fibre, which is the whole point of reading more than one number. The manufacturing address is the part almost nobody looks at, and it is often much further away than people guess.
Did you know
Per 100 g, potato wafers carry 536 kilocalories and roasted chana 355, so the wafers are far denser in energy.
Per 100 g, roasted chana has 18.64 g of protein against 7.0 g in potato wafers, and 16.8 g of fibre against 4.8 g.
Sanwa is the barnyard millet, and jowar, bajra and ragi are the other three the chapter names.
Memory tricks
What makes a diet balanced — All nutrients, roughage, water, right amount — Four parts. The last one is the part people forget, and it differs per person.
The four millets — Jowar, bajra, ragi, sanwa — All four are native crops of India, and all four are nutri-cereals.
Practice MCQs with answers (20)
- A every nutrient, plus roughage and water, each in the amount needed
- B as much protein as the human body can possibly take in at any one time
- C only foods grown within one district
- D no fat and no carbohydrate at all
Show answer
Why:
The phrase in the right amount is the working part of the definition.
- A I and II only
- B II and III only
- C I and III only
- D I, II and III
Show answer
Why:
I and III are correct. II is the opposite: fortification ADDS nutrients to a food while it is being processed.
- A contain more protein
- B are denser in energy
- C contain more fibre
- D are the better choice
Show answer
Why:
Energy density is the only measure on which the wafers lead.
- A About one half as much again
- B About the same
- C About two and a half times
- D About ten times
Show answer
Why:
Reading a label is a matter of comparing the columns, not the pictures.
- A Potato wafers
- B A carbonated drink
- C A candy bar
- D Roasted chana
Show answer
Why:
The wafers carry 4.8 g, which is less than a third of it.
- A protein and fibre
- B vitamins and minerals
- C sugar and fat
- D water and roughage
Show answer
Why:
And they are very low in protein, minerals, vitamins and fibre.
- A Ragi, bajra, jowar
- B Potato wafers, candy bars, carbonated drinks
- C Roasted chana, amla, guava and fresh groundnuts
- D Milk, paneer, curd
Show answer
Why:
One of them is the packet compared against roasted chana.
- A Both true, and the reason explains the assertion
- B Both true, but the reason does not explain it
- C The assertion is true and the reason is false
- D The assertion is false and the reason is true
Show answer
Why:
Both are true, and the reason is why. They carry a great many calories and very little of anything else.
- A pulses
- B fruits
- C minerals
- D millets
Show answer
Why:
Sanwa is the barnyard millet.
- A a great deal more sugar than other grains
- B more water than other grains
- C vitamins, minerals and dietary fibres
- D no carbohydrate at all
Show answer
Why:
Iron and calcium are the minerals the chapter names.
- A They are imported into India from abroad
- B They can only be grown in one kind of climate
- C They are native crops that grow in many climates
- D They have only been eaten in India since 2002
Show answer
Why:
They have been part of the Indian diet for centuries.
- A fortification
- B winnowing
- C threshing
- D balancing
Show answer
Why:
Iodised salt is one example of it, and certain baby foods another.
- A a brand of packaged food
- B a millet grown in south India
- C a nutrient that gets added in during processing
- D a government agency regulating food quality
Show answer
Why:
The letters stand for India's Food Safety and Standard Authority, the national regulator.
- A how far a person walks to buy food
- B how far a food has travelled from producer to eater
- C the energy that a food gives for every 100 grams of it
- D the number of shops a food is sold in
Show answer
Why:
A bag of wheat is the example the chapter uses.
- A It cuts the cost of transport
- B It cuts pollution from transport
- C It supports local farmers
- D It makes food cheaper to grow
Show answer
Why:
Keeping food fresh and healthy is the fourth reason given.
- A Grinding, storage, threshing
- B Threshing, storage, grinding
- C Storage, grinding, threshing
- D Threshing, grinding, storage
Show answer
Why:
The grain is cleaned, then kept, then turned into flour.
- A That the food inside must be very fresh
- B That the packet fails a requirement it should meet
- C That the food inside contains no nutrients of any kind
- D That the food has been fortified
Show answer
Why:
Packaged food must carry the amount of each nutrient on its cover.
- A Because waste throws away everyone's work in getting it there
- B Because leftover food cannot be stored
- C Because large plates are a great deal more expensive than small ones
- D Because eating slowly is healthier
Show answer
Why:
A farmer and many others moved that food from the farm to the plate.
- A fewer food miles
- B more food miles
- C more calories per 100 g
- D less dietary fibre
Show answer
Why:
Shorter travel means less cost, less pollution and fresher fruit.
- A Nothing, since a balanced diet is the same for everyone
- B Only the older child needs a balanced diet
- C Children should never eat the same foods
- D Requirements vary with age, so the right amount differs
Show answer
Why:
Age, gender, activity, health and lifestyle all move the figure.
Important short questions (6)
A balanced diet carries every essential nutrient, with roughage and water, in amounts suited to the eater. That amount varies with age, gender, activity, health and lifestyle.
The chana has 18.64 g of protein per 100 g against 7.0 g, and 16.8 g of fibre against 4.8 g. It also carries far less fat and fewer calories.
High calories from sugar and fat, with very low protein, minerals, vitamins and dietary fibre. Eating such food frequently can make a person obese and bring several health problems.
Jowar, bajra, ragi and sanwa. They are called nutri-cereals because they are good sources of vitamins, of minerals such as iron and calcium, and of dietary fibres.
Fortification means putting extra nutrients into a food while it is processed, so that its nutritional quality rises. Iodised salt is one example and certain baby foods another.
Food miles is how far a food has travelled in all, producer to eater. Keeping it short cuts transport cost and pollution, and it supports local farmers.
Long answer questions (3)
I would take the roasted chana, and the figures on the two packets are the reason. Per 100 grams the chana carries 18.64 g of protein against 7.0 g in the wafers. Its dietary fibre is 16.8 g against 4.8 g. Its fat is 6.26 g against 35.0 g, and its energy 355 kilocalories against 536. So the chana gives far more of what the body is usually short of and far less of what it is not. The wafers lead on energy density alone, and that is what makes them a junk food.
Food miles is the whole journey a bag of wheat makes, or any other food, from the person who produced it to the person who eats it. Shortening that journey cuts the cost of transport and the pollution it causes. It supports local farmers, and it keeps the food fresher and healthier. A school could buy its vegetables and grain from farms nearby rather than from far away. It could serve what is in season locally. It could also ask where each item on the plate has come from, which is the step most people never take.
A farmer grows the wheat. The grain is threshed and winnowed to clean it, and then stored. Later it is ground into flour and packed. The packed flour is transported to a retail shop. Someone buys it, and it is cooked into a chapati that reaches the plate. Every one of those steps takes time and people. That is why leaving food unconsumed on a plate is a real loss: it throws away the work of the farmer and of everybody after them. Taking only as much as you can eat is the simplest answer.
Flashcards (15)
Play this topic
- Junk food or nutri-cereal?
- Term and meaning
- Fact or myth?
- The story of a chapati
- Label-reading sprint
Class 6 Science Chapter 3 — frequently asked questions
Because those crops are what grow there and are easily available. A region can only build its everyday dishes from what its soil and climate allow it to raise.
The crops cultivated in that region come first. Then the taste preferences of the people there, the culture, and the traditions.
Punjab grows maize and eats makki di roti. Karnataka grows ragi and eats ragi mudde. Either pair is enough.
Because glucose provides energy at once. A meal would take time the runner does not have during a race.
Wheat from the cereals, potato from the vegetables, and banana from the fruits. Common sugar would also count.
Carbohydrate supplies energy that can be used at once. Fat is a store of energy, kept for later use.
That sailors who ate lemons and oranges recovered from gums that bled and swelled. Those symptoms are scurvy, and the fruit was supplying the Vitamin C they lacked.
Because the soil there held little iodine. The local food and water therefore carried little of it, whatever the people ate.
Vitamin A, loss of vision. Vitamin B1, beriberi. Vitamin C, scurvy. Vitamin D, rickets.
Because it helps the body get rid of undigested food and keeps stools passing smoothly. That work is necessary even though no nourishment comes from it.
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